Sabot and projectile with improved coupling for better torque transfer

Abstract

A self-separating sabot-projectile assembly with a positive engaging attachment to eliminate rotational slippage between the sabot and projectile. The torque transmitting interface between the sabot and projectile consists of a geometric shaped depression in the rearward end surface of the projectile which mates with a matched projection of the sabot. The sabot projection is hollowed out to allow the charge pressure to aid in the engagement of the sabot and projectile.

What is claimed is: 
     
       1. A sabot-projectile assembly, comprising:
 a projectile with; 
 a geometric shaped impression in a central region of a reward surface to accept a mating, central protrusion of the sabot 
 a sabot with; 
 a longitudinally slotted extended bore for receiving the projectile and easily releasing from the projectile; and 
 a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission. 
 
     
     
       2. A sabot-projectile assembly according to  claim 1 , where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramids. 
     
     
       3. A sabot-projectile assembly according to  claim 1 , where the geometric shaped pocket of the projectile, sabot protrusion, and/or sabot hollow pocket are a truncated pyramid. 
     
     
       4. A sabot-projectile assembly according to  claim 1 , where the projectile is made from a metallic material. 
     
     
       5. A sabot-projectile assembly according to  claim 1 , where the projectile is made from a polymeric material. 
     
     
       6. A sabot-projectile assembly according to  claim 1 , where the projectile is made from a metal-polymeric composite material. 
     
     
       7. A sabot-projectile assembly according to  claim 1 , where the sabot is made from a polymeric material. 
     
     
       8. A sabot-projectile assembly, comprising:
 a projectile with; 
 a geometric shaped impression in the rearward surface to accept a mating protrusion of the sabot 
 a one-piece sabot with; 
 a longitudinally slotted extended bow for receiving the projectile and easily releasing from the projectile; and 
 a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission, where the geometric shaped impression of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges. 
 
     
     
       9. A sabot-projectile assembly, comprising:
 a projectile with; 
 a geometric shaped impression in the rearward surface to accept a mating protrusion of the sabot 
 a one-piece sabot with; 
 a longitudinally slotted extended bore for receiving the projectile and easily releasing from the projectile; and 
 a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission, where the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges. 
 
     
     
       10. A sabot-projectile assembly according to  claim 2 , where the projectile is made from a metallic material. 
     
     
       11. A sabot-projectile assembly according to  claim 2 , where the projectile is made from a polymeric material. 
     
     
       12. A sabot-projectile assembly according to  claim 2 , where the projectile is made from a metal-polymeric composite material. 
     
     
       13. A sabot-projectile assembly according to  claim 2 , where the sabot is made from a polymeric material. 
     
     
       14. A sabot-projectile assembly according to  claim 1 , where the sabot is one-piece. 
     
     
       15. A sabot-projectile assembly according to  claim 1 , where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket include multiple facets. 
     
     
       16. A sabot-projectile assembly according to  claim 15 , where the facets of the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges. 
     
     
       17. A sabot-projectile assembly according to  claim 1 , where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramid shaped. 
     
     
       18. A sabot-projectile assembly according to  claim 17 , where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket include multiple facets. 
     
     
       19. A sabot-projectile assembly according to  claim 17 , where the pyramid shape facets of the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges. 
     
     
       20. A sabot-projectile assembly according to  claim 2 , where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramids that include multiple facets having radii edges.